fourier spectrum analysis fourier谱分析
fourier frequency spectrum analysis 富里叶频谱分析
fourier transform infrared spectrum analysis 傅里叶变换红外光谱分析
This paper presents calculation of frequency and phase difference of flow signals with spectrum analysis on basics of Fourier transform (DFT).
本文采用基于傅立叶变换(DFT)的频谱分析方法,计算流量信号的频率和相位差。
The mechanism of de-inking of photocopy waste paper with solvent treatment was investigated by Fourier transforming infrared spectrum (FT-IR), image-scanning and microscope analysis.
采用傅立叶变换红外光谱、图像扫描和显微分析等手段,研究了静电复印废纸溶剂法脱墨的机理。
Using Fourier series, the frequency spectrum analysis was analyzed, and spectrum data of harmony wave less than 19 were calculated.
利用傅里叶级数对其进行了频谱分析,计算了次数小于19次的各次谐波电流均方根值的频谱数据。
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